QUOTE(Capn_Fish @ Apr 17 2007, 07:56 AM)
In theory, since it has an ARM port, you could use it on the Z (I'm actually thinking of looking into it).
There is PocketWorkstation (http://pocketworkstation.org/), which is Debian for the Zaurus, but it's not the latest version. You could look into that. There are how-tos on the forums here.
If you want to run "desktop PC" apps, take a look at pdaXrom or PdaXii13. They are very similar to "normal" Linux.
Actually, pocketworkstation works on top of the stock rom, in a chroot environment. At a minimum, you have to leave the stock rom in place, so lose at least some of the storage you paid for. On the other hand, titchy linux gives you a wraparound boot package, which then you complete with debian arm packages. Check it out.